GHSA-cc37-9q2j-3hfv
Netty: HAProxy SSL TLV parsing leaks retained slice on invalid TLV length
At a glance
- Published
- Updated
- CVE
- CVE-2026-44893
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
When decoding a PP2_TYPE_SSL TLV, HAProxyMessage.readNextTLV() first calls `header.retainedSlice(header.readerIndex(), length)` and only then reads the 1-byte client field and 4-byte verify field. If the attacker sets the TLV length below 5, the subsequent readByte/readInt throws IndexOutOfBoundsException. HAProxyMessageDecoder only catches HAProxyProtocolException around this call, so the IOOBE propagates and the retained slice on the pooled cumulation buffer is never released.
Affected packages
| Package | Versions |
|---|---|
| Maven · io.netty:netty-codec-haproxy | introduced 4.2.0.Final, fixed 4.2.15.Final |
| Maven · io.netty:netty-codec-haproxy | introduced 0, fixed 4.1.135.Final |
References
- https://github.com/netty/netty/security/advisories/GHSA-cc37-9q2j-3hfv WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-44893 ADVISORY
- https://github.com/netty/netty PACKAGE
- https://github.com/netty/netty/releases/tag/netty-4.1.135.Final WEB
- https://github.com/netty/netty/releases/tag/netty-4.2.15.Final WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |